Home / 138,667.02-207,592.29-85,906.86

Finding the Fourth Proportional to 138,667.02, 207,592.29 and 85,906.86

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Solution

The fourth proportional to 138,667.02, 207,592.29 and 85,906.86 is: 128,607.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,667.02 : 207,592.29 = 85,906.86 : x
  2. Step 2: Convert to fraction form
    138,667.02/207,592.29 = 85,906.86/x
  3. Step 3: Cross multiply
    138,667.02x = 207,592.29 × 85,906.86
  4. Step 4: Simplify right side
    138,667.02x = 17,833,601,794.11
  5. Step 5: Solve for x
    x = 17,833,601,794.11/138,667.02
  6. Step 6: Final answer
    x = 128,607.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.